Shapes and Polarities of Molecules (Second Edition)
Observations are made of electric effects, including deflections of streams of liquids by a charged rod, and changes in charging time of a capacitor. There is evidence that different molecules give two types of results: some give very marked interactions with electric charges, while others give little effect. To explain these different results, a conceptual model is developed based on two types of molecules: polar and non-polar. Consideration of bond polarity and molecular shape allows prediction of molecular polarity. The molecular dipole model is used to explain differences in solubility, conductivity, and chemical reactivity.
Run time 19 minutes 52 secondsProducer CHEM Study, College of Chemistry and Lawrence Hall of Science, U.C. BerkeleyAudio/Visual sound
Science Consultant: Professor David Dows, University of Southern California, Los Angeles.
Wardâs Volume 22, CHEM Study #4154, 20 minutes. In color, 1989.